Treadmill



FIG. 1 is a back elevation view of the treadmill showing my design.

FIG. 2 is a front elevation view thereof;

FIG. 3 is a side elevation view thereof;

FIG. 4 is an opposite side elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front upper perspective view thereof.

The broken lines in the drawings showing the treadmill illustrate the portions of the treadmill that form no part of the claimed design. 

CLAIM The ornamental design for a treadmill, as shown and described. 